3)Connect vacuum pump gauge to nozzle
@
and plug nozzle @ with your finger.
While blowing air into nozzle
0,
operate
vacuum pump gauge and check that vacuum
is applied to modulator then.
3) Disconnect coupler and connect 12V-battery
to TWSV terminals. In this state, blow hose
0.
Air should come out of filter and not
out of hose
0.
1. Nozzle
2. Nozzle
3. Nozzle
4. Blow air
5. Vacuum pump gauge
Fig.
5-3-57
Checking EG R modulator (2)
4) After checking, install modulator and connect
hoses securely. Refer to Fig. 5-l-l for con-
necting.
[Three way solenoid valve
(TWSV)]
1) Disconnect 2 vacuum hoses from
EGR
modulator and EGR valve.
2) Blow hose
0.
Air should come out of hose
@
and not out of filter.
1. Hose to EGR valve
2. Hose to EGR modulator
3. Filter
4. Blow air
5. TWSV
Wue)
f-
4
-1
1. Hose to EGR valve
4. Blow air
2.
Hose to
EGR
modulator
5.
Twsv
3.
Filter
6.
Battery
Fig.
5-3-59
4)After checking, be sure to connect vacuum
hoses and coupler.
Fig. 5-3-58
5-39
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